subrequest failover

[Maxim Dounin]

Hello!

On Thu, Sep 16, 2010 at 05:29:21AM -0400, reaper wrote:

> I'm also having strange issue with backup statement. Here's my config
> [code]
> upstream test {
>   server 10.0.0.1;
>   server 10.0.0.2 backup;
> }
> 
> upstream proxy {
>   server 94.1.1.1;
> #  server 95.1.1.1 backup;
> }
> 
> server {
>   listen 80;
>   server_name _;
> 
>   access_log off;
> 
>   location / {
>     proxy_pass http://proxy;
> #    proxy_pass http://test;
>     proxy_set_header Host $host;
>     proxy_set_header X-Real-IP $remote_addr;
>     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
> 
>     client_max_body_size       100m;
>     client_body_buffer_size    128k;
>   }
> }
> [/code]
> It shows no errors on nginx -t run but as I uncomment "server 95.1.1.1
> backup;" line it outputs
> [code]
> [emerg]: invalid parameter "backup" in /etc/nginx/sites-enabled/site:8
> configuration file /etc/nginx/nginx.conf test failed
> [/code]
> 
> 
> No errors in "upstream test" section. Why is that? Tried nginx 0.7.67-3
> and 0.6.32-3 from debian packages.

Most likely you have upstream "proxy" already defined somewhere 
before your "upstream proxy" block, e.g. implicitly via

    proxy_pass http://proxy;

or something like this.

Maxim Dounin